Controller design for hot strip finishing mills
Controller design for hot strip finishing mills
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DOI：
10.1109/87.664188
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发表时间：
1998-03
期刊：
影响因子：
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通讯作者：
T. Hesketh;Yu Jiang;D. Clements;D. Butler;R. Laan
中科院分区：
文献类型：
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作者：
T. Hesketh;Yu Jiang;D. Clements;D. Butler;R. Laan
介绍了与必和必拓钢铁公司在澳大利亚肯布拉港开展的合作研究项目迄今为止的结果。该项目涉及必和必拓热轧带钢轧机（精轧机）的带材张力和活套角度的控制。新控制器已成功应用于该流程，现在负责工厂的所有生产。该论文描述了该过程的模型，与其他人的工作中报告的模型类似。基于递归非线性方法（参见反步法），追溯了全非线性控制器的发展。深入了解可能的系统结构，特别是在张力测量可能无法使用的输出反馈情况下。研究了替代控制器方案，包括包含滤波器的推测设计（类似于从线性系统的输出反馈设计获得的滤波器）以及需要与可变结构设计进行比较的非线性算子。仿真结果以及实际生产记录的结果为最终实施提供了依据。
The results to date of a collaborative research project with BHP Steel in Port Kembla, Australia, are described. The project is concerned with control of strip tension and looper angle in BHP's hot strip steel rolling mill (the finishing mill). The new controllers have been successfully implemented on the process and now handle all the production at the mill. The paper describes a model of the process, similar to that reported in the work of others. The development of a full nonlinear controller is traced, based on a recursive nonlinear method (cf., backstepping). Insights are drawn into possible system structures, particularly in the output feedback case when tension measurements may not be available. Alternative controller schemes are examined, including a speculative design which contains filters, similar to those obtained from output feedback designs of linear systems, together with nonlinear operators which invite comparisons with variable structure designs. Simulation results, which provided the justification for the final implementation, together with results from actual production records are presented.